Download or read book Heteroepitaxial Diamond Growth for Fission Neutron Detection written by and published by . This book was released on 2010 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nucleation and Growth of Heteroepitaxial Diamond written by Connie Rebecca Bednarski-Meinke and published by . This book was released on 2002 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth of Single Crystal Diamond written by Murari Regmi and published by . This book was released on 2007 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heteroepitaxial Diamond Growth written by and published by . This book was released on 1994 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This phase of the program saw progress in four key technology areas: (1) homoepitaxial diamond optimization, (2) epitaxial joining to form a tiled array, (3) diamond single-crystal lift-off, and (4) negative electron affinity (NEA) of diamond surfaces. These results are summarized. jg p.2.
Download or read book CVD Diamond for Electronic Devices and Sensors written by Ricardo S. Sussmann and published by John Wiley & Sons. This book was released on 2009-01-09 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic diamond is diamond produced by using chemical or physical processes. Like naturally occurring diamond it is composed of a three-dimensional carbon crystal. Due to its extreme physical properties, synthetic diamond is used in many industrial applications, such as drill bits and scratch-proof coatings, and has the potential to be used in many new application areas A brand new title from the respected Wiley Materials for Electronic and Optoelectronic Applications series, this title is the most up-to-date resource for diamond specialists. Beginning with an introduction to the properties of diamond, defects, impurities and the growth of CVD diamond with its imminent commercial impact, the remainder of the book comprises six sections: introduction, radiation sensors, active electronic devices, biosensors, MEMs and electrochemistry. Subsequent chapters cover the diverse areas in which diamond applications are having an impact including electronics, sensors and actuators and medicine.
Download or read book Growth of Heteroepitaxial Diamond on Nickel written by Peichun Yang and published by . This book was released on 1997 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diamond Heteroepitaxy by Bias Enhanced Nucleation written by Vidhya Sagar Jayaseelan and published by . This book was released on 2008 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diamond has exceptional semiconducting and optical properties that can be used for a wide variety of new applications such as high temperature, high power devices, and optical windows. Exploitation of these properties of diamond needs the development of heteroepitaxial diamond growth process on traditional substrates such as Silicon and Silicon Carbide. Bias enhanced nucleation (BEN) followed by Plasma Enhanced Chemical vapor Deposition (PECVD) has been recognized as a promising route to achieve this goal. However, the BEN process for heteroepitaxy and its mechanism is not well understood. In this study, a system is designed and fabricated to enable the application of bias during diamond deposition in an ASTEX PECVD system, and heteroepitaxial diamond films are grown. The evolution of the oriented diamond film and its microstructure is studied by SEM, TEM, and XRD techniques revealing the formation of misoriented grains, extensive twinning and low angle grain boundaries. The effect of the BEN process conditions on the degree of orientation is investigated. It is observed that the orientation of the films improved at lower bias durations, methane flow rates and bias voltages. TEM images of the nucleation layer are analyzed, and the changes in the nucleation layer grain structure with process parameters are studied. Significant variation in the microstructure and grain size from an average of about 560 nm to about 10 nm is observed with change in process conditions. The BEN process is investigated and the nature of the deposit forming during this step is revealed using SEM, TEM and Raman spectroscopy to be predominantly a nanocrystalline diamond film along with rhombohedral and amorphous carbon. A simple model based on the formation of a nanocrystalline diamond particles during BEN, followed by their growth and coalescence under the plasma is proposed to describe the oriented film formation. The variations in microstructures and orientation are correlated with the process conditions under which they are formed.
Download or read book Bias Enhanced Nucleation and Heteroepitaxial Growth of Diamond by Microwave Plasma Chemical Vapor Deposition written by Brian Rhys Stoner and published by . This book was released on 1992 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutron Energy Spectrometer written by Ben Roger Gossick and published by . This book was released on 1950 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantitative EPR written by Gareth R. Eaton and published by Springer Science & Business Media. This book was released on 2010-04-10 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a growing need in both industrial and academic research to obtain accurate quantitative results from continuous wave (CW) electron paramagnetic resonance (EPR) experiments. This book describes various sample-related, instrument-related and software-related aspects of obtaining quantitative results from EPR expe- ments. Some speci?c items to be discussed include: selection of a reference standard, resonator considerations (Q, B ,B ), power saturation, sample position- 1 m ing, and ?nally, the blending of all the factors together to provide a calculation model for obtaining an accurate spin concentration of a sample. This book might, at ?rst glance, appear to be a step back from some of the more advanced pulsed methods discussed in recent EPR texts, but actually quantitative “routine CW EPR” is a challenging technique, and requires a thorough understa- ing of the spectrometer and the spin system. Quantitation of CW EPR can be subdivided into two main categories: (1) intensity and (2) magnetic ?eld/mic- wave frequency measurement. Intensity is important for spin counting. Both re- tive intensity quantitation of EPR samples and their absolute spin concentration of samples are often of interest. This information is important for kinetics, mechanism elucidation, and commercial applications where EPR serves as a detection system for free radicals produced in an industrial process. It is also important for the study of magnetic properties. Magnetic ?eld/microwave frequency is important for g and nuclear hyper?ne coupling measurements that re?ect the electronic structure of the radicals or metal ions.
Download or read book Properties and Applications of Silicon Carbide written by Rosario Gerhardt and published by BoD – Books on Demand. This book was released on 2011-04-04 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, we explore an eclectic mix of articles that highlight some new potential applications of SiC and different ways to achieve specific properties. Some articles describe well-established processing methods, while others highlight phase equilibria or machining methods. A resurgence of interest in the structural arena is evident, while new ways to utilize the interesting electromagnetic properties of SiC continue to increase.
Download or read book Sapphire written by Elena R. Dobrovinskaya and published by Springer Science & Business Media. This book was released on 2009-04-21 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: By the second half of the twentieth century, a new branch of materials science had come into being — crystalline materials research. Its appearance is linked to the emergence of advanced technologies primarily based on single crystals (bulk crystals and films). At the turn of the last century, the impending onset of the “ceramic era” was forecasted. It was believed that ceramics would play a role comparable to that of the Stone or Bronze Ages in the history of civilization. Naturally, such an assumption was hypothetical, but it showed that ceramic materials had evoked keen interest among researchers. Although sapphire traditionally has been considered a gem, it has developed into a material typical of the “ceramic era.” Widening the field of sapphire application necessitated essential improvement of its homogeneity and working characteristics and extension of the range of sapphire products, especially those with stipulated properties including a preset structural defect distribution. In the early 1980s, successful attainment of crystals with predetermined char- teristics was attributed to proper choice of the growth method. At present, in view of the fact that the requirements for crystalline products have become more str- gent, such an approach tends to be insufficient. It is clear that one must take into account the physical–chemical processes that take place during the formation of the real crystal structure, i.e., the growth mechanisms and the nature and causes of crystal imperfections.
Download or read book Carbyne and Carbynoid Structures written by R.B. Heimann and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a book on one of the most fascinating and controversial areas in contemporary science of carbon, chemistry, and materials science. It concisely summarizes the state of the art in topical and critical reviews written by professionals in this and related fields.
Download or read book The Nature of Diamonds written by George E. Harlow and published by Cambridge University Press. This book was released on 1998 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paragon of physical perfection and a sparkling example of Earth's forces at work, the diamond has fascinated all realms of society, from Russian tsars and Hollywood stars to scientists and brides-to-be. The Nature of Diamonds is an authoritative and richly illustrated look at nature's most coveted gem. Leading geologists, gemologists, physicists, and cultural observers cover every facet of the stone, from its formation in the depths of the Earth and its explosive ascent to the surface, to its economic, regal, social, and technological roles. The book takes the reader to cutting-edge research on the frontiers of diamond exploration and exploitation, from Arctic wastes to laboratories that create industrial diamonds for cutting tools that slice through rock. Charting the history of mining from its origins in India and Brazil, the book follows the diamond rush in South Africa to today's high-tech enterprises. It provides a glimpse into the economics of the diamond trade, and an overview of diamond cutting, from the rough uncut stones in early Indian and Roman jewelry to the multifaceted stones we see today. The cultural history of the diamond as both a revered and a social symbol is explored, from its early history as the exclusive property of royalty to today's brilliant-laden jewelry as an emblem of wealth and status. The engaging text is complemented by more than 200 lavish illustrations which span fine art, earth science, and cultural studies and capture the brilliance and beauty of this extraordinary gem.
Download or read book Materials Under Extreme Conditions written by A. K. Tyagi and published by Elsevier. This book was released on 2017-01-13 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials Under Extreme Conditions: Recent Trends and Future Prospects analyzes the chemical transformation and decomposition of materials exposed to extreme conditions, such as high temperature, high pressure, hostile chemical environments, high radiation fields, high vacuum, high magnetic and electric fields, wear and abrasion related to chemical bonding, special crystallographic features, and microstructures. The materials covered in this work encompass oxides, non-oxides, alloys and intermetallics, glasses, and carbon-based materials. The book is written for researchers in academia and industry, and technologists in chemical engineering, materials chemistry, chemistry, and condensed matter physics. - Describes and analyzes the chemical transformation and decomposition of a wide range of materials exposed to extreme conditions - Brings together information currently scattered across the Internet or incoherently dispersed amongst journals and proceedings - Presents chapters on phenomena, materials synthesis, and processing, characterization and properties, and applications - Written by established researchers in the field
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
